Every few weeks someone comes in having had cupping on holiday, shows us a photo of eight dark circles across their back, and asks whether something went wrong. Almost always, nothing did. But the internet is full of colour charts claiming those circles reveal how much “toxicity” you are carrying, and that is worth correcting.
We use cupping most days at our Bromley clinic, nearly always alongside sports massage rather than on its own, and the marks question comes up within about thirty seconds of the cups coming off. Here is the honest version.
What the marks actually are
A cup works by negative pressure: it lifts the skin and the tissue underneath rather than pressing down the way hands do. Hold that suction in one spot for a few minutes and some of the very small blood vessels near the surface give way, letting a little blood settle into the tissue. That circle on your back is pooled blood sitting close to the skin.
It looks like a bruise and fades like one, but it is not the same injury. A bruise from a rugby tackle or a dropped dumbbell involves impact, tissue is crushed, which is why bruises are sore. Cupping marks usually are not sore at all. If yours are painful to touch, the suction was too strong or held too long, and it is worth saying so rather than assuming that is normal.
No, the colour does not tell you how toxic you are
You will find charts matching mark colour to a diagnosis: pale means poor circulation, dark purple means stagnation or toxins. There is no good evidence for any of it. Blood that has leaked out of a capillary has no way of sorting itself by how healthy its owner is.
What actually changes the colour is much more boring:
- How much suction was used, and how long the cup stayed in one place
- Where on the body it was, fleshy areas like the upper back mark far more readily than bony ones
- Your skin tone, and how fragile your capillaries happen to be
- Your age, and whether you take anything that affects bruising or bleeding
- Whether that area has been cupped recently
That last one gets misread. A first session often marks more than later ones on the same area, and it is tempting to conclude the body has cleared something, more likely the fragile local vessels have already been through it.
How long cupping marks last
Usually between three days and a fortnight. Faint pink circles often go within two or three days; deeper purple ones take a week to ten days and pass through the same yellow-green stage a bruise does as the blood is reabsorbed. Nothing reliably speeds that up, and products sold to clear them faster are not worth the money.
If you have a wedding, a holiday or anything backless coming up, mention it before the session rather than after. Lighter suction, moving the cups instead of parking them, or skipping cupping that week are all easy adjustments.
Does cupping hurt?
Most people describe a strong pulling or tightness rather than pain, in some ways the opposite sensation to a deep tissue massage, where the pressure goes in rather than out. Moving cupping, where the cup is slid along the muscle with oil, can feel more intense but tends to mark less. Afterwards you might feel slightly achy for a day. Blistering, broken skin, or pain worsening after twenty-four hours are not expected and are worth a phone call.
What cupping is actually useful for
We would rather be straight with you than sell you something: the research is thin. A recent review comparing dry cupping against placebo cupping for musculoskeletal pain found the evidence very uncertain at every time point. Broader reviews are kinder, rating it low to moderate for neck and lower back pain, while noting most studies are small and poorly blinded, hard to avoid, given how difficult it is to fake a cup.
So we treat it as one tool among several rather than a headline treatment. In practice it earns its place for:
- Tight upper backs and shoulders in people who sit at a desk all week
- Broad areas of stiffness where hands-on work alone has stalled
- Recovery between hard training blocks, added to a massage
- People who find the sensation easier to tolerate than deep pressure
Our cupping therapy page covers how it fits into a session.
When cupping is not the answer
It is not appropriate over broken, inflamed or infected skin, a flare of eczema or psoriasis, moles or skin lesions, or a fresh acute injury. If you take blood-thinning medication or have a bleeding or clotting condition, we would ask you to check with your GP first. In pregnancy we leave the abdomen and lower back alone.
More importantly, some symptoms need a doctor, not a therapist. See your GP promptly, or go to A&E, if back or neck pain comes with any of these:
- Numbness around the groin, inner thighs or saddle area, or loss of bladder or bowel control, same day
- Weakness in a leg or arm that is worsening, or unsteadiness on your feet
- Pain following a significant fall or car accident
- Fever, unexplained weight loss, or night pain that wakes you
- A history of cancer, or a hot, swollen, tender calf
There is a quieter category. If a niggle returns within days of every treatment, more cupping is not the answer. That is a signal to look at the load going through the tissue, which is what posture analysis and a proper exercise programme are for. The homework usually matters more than the treatment.
Book cupping therapy in Bromley
SMSM Therapy, Carlton Chambers, 5 Station Road, Bromley BR2 0EY. Come in through the red side gate to the right of the building. It is a three-minute walk from Shortlands station.
Call 07896 257328, email info@smsmtherapy.co.uk or book online. Check our prices and location details first.
We see clients from Bromley, Beckenham, Shortlands, Hayes, West Wickham, Chislehurst, Petts Wood and Orpington.
Written by Dharam Vyas, sports therapist and clinic director at SMSM Therapy, Bromley.
